EP1024552A2 - Antenna for radio communication terminals - Google Patents

Antenna for radio communication terminals Download PDF

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Publication number
EP1024552A2
EP1024552A2 EP00100221A EP00100221A EP1024552A2 EP 1024552 A2 EP1024552 A2 EP 1024552A2 EP 00100221 A EP00100221 A EP 00100221A EP 00100221 A EP00100221 A EP 00100221A EP 1024552 A2 EP1024552 A2 EP 1024552A2
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EP
European Patent Office
Prior art keywords
antenna
antenna according
antennas
ground
type
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00100221A
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German (de)
French (fr)
Other versions
EP1024552A3 (en
Inventor
Martin Dr. Weinberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1024552A2 publication Critical patent/EP1024552A2/en
Publication of EP1024552A3 publication Critical patent/EP1024552A3/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • H01Q5/364—Creating multiple current paths
    • H01Q5/371—Branching current paths
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/378—Combination of fed elements with parasitic elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element

Definitions

  • the present invention relates to an antenna for radio-operated Communication terminals.
  • antennas are needed, which are able are to cover several frequency bands at the same time.
  • market is asking for smaller and cheaper ones Mobile devices. That is why antennas are required, some have a small footprint, easily for a function in several frequency bands or a broadband frequency range can be designed and manufactured cheaply.
  • the object of the present invention is to provide an antenna for radio-operated communication terminals to specify which simple is built up and simultaneously several frequency bands can cover.
  • An antenna for radio-operated communication terminals for Solution to the problem according to the invention is characterized by one consisting of several different antenna types Combination, where each antenna type exists one or more times can be and where the combination of several antennas is only fed in at one point.
  • the antenna according to the invention is easy and inexpensive to manufacture, requires little space and is easy for a function in several frequency bands or in one broadband frequency range can be designed.
  • FIG. 1 and 2 are the two actual antennas in FIG. from which the multiband antenna according to the invention is composed is referred to, it being in that shown in Figure 1
  • a metallic EMC shield 4 is covered with a metallic EMC shield 4 in the Multiband antenna shown, this forms metallic EMC shielding for the two antennas 1 and 2 necessary dimensions.
  • connection between the radiator element of the antenna 1 and the metallic EMC shield 4 is connected via the ground connection 5 manufactured.
  • the actual feeding point of the antenna is marked with 6.
  • With 7 is a symbolic coupling of the two antennas 1 and 2 indicated. This coupling can be capacitive, inductive, blasted or galvanic his. Due to the type of coupling, different parameters the antenna.
  • ground connection 5 is also selective, as well as several times is possible.
  • FIG. 2 now shows a perspective representation of a principle Multiband antenna according to the present invention, which from a planar inverted-F antenna 8 and a planar Inverted L antenna 9 is made.
  • the two antennas 8 and 9 via a galvanic coupling 10 coupled together.
  • Feeding the multiband antenna takes place by means of a feed point 11, which with the planar Inverted L antenna 9 is connected.
  • the ground connection of the Antenna configuration shown takes place via the ground connection 12th
  • FIG. 3 shows an antenna configuration which consists of a Microstrip antenna 13 and one galvanically connected to it planar inverted L antenna 14 exists.
  • the antenna configuration is fed via the feed point 15.
  • FIG. 4 shows an embodiment of an inventive Multi-band antenna, in which, in contrast to that in FIG. 1 Multiband antenna shown an additional separate ground plate 16 is provided. Because under normal circumstances Mass ratios within a radio-operated communication terminal are not always fully predictable Mass plate 16 for defined mass ratios with respect to the multi-band antenna. Between the ground plate and the device ground one or more connections can be provided his.
  • FIGS 5a to 5m show a small sample selection of differently designed and linked together Types of antennas according to the present invention. This Selection is by no means restrictive. The same applies here that the Any combination of the coupled antenna types can be.
  • the radiating element can be wavy, as shown in FIG is formed, or, as shown in FIG. 8, rectangular meandering.
  • FIG. 7 shows, by way of example, that it goes without saying also the ground plate of the shape of the radiator element can adjust.
  • the multi-band antenna is not 100 percent parallel for metallic EMC shielding of the radio-operated communication terminal runs, but at one or several places a larger distance between the antenna and the metallic EMC layer. This is an example shown in Figure 9.
  • the increase in distance can, for example also occur at the feed point of the antenna.
  • FIG. 12 is a perspective representation of a principle partially shortened antenna configuration according to the present Invention shown.
  • the antenna configuration shown consists of a compressed microstrip antenna 17 and a planar inverted-F antenna 18 which are connected to each other are electrically connected, the supply and the connection with ground via the planar inverted-F antenna.
  • parts of the actual radiator elements point the two antennas have different heights or slopes on.
  • the invention Antenna the problem underlying the invention resolves that none, one or more planar inverted-F antennas and / or none, one or more planar inverted-L antennas and / or none, one or more microstrip (patch) antennas by coupling to one another to form an antenna system get connected.
  • microstrip (patch) antennas by coupling to one another to form an antenna system get connected.
  • the present invention is not limited to this.
  • the antenna structure is only fed at one point.
  • This preferably has a planar inverted-F structure or a planar inverted L structure.
  • the coupling between the individual radiator elements can be capacitive, inductive, blasted or be galvanic. Due to the type and number of couplings various parameters of the antenna can be set. For example, are the dimensions for the planar inverted-F antenna and the length of the microstrip antenna the same, the radiation frequencies behave like approx. 1: 2. This can be used as a GSM-PCN antenna.
  • This planar antenna structure requires one feed and one or several ground connections, which can be of any shape can do certain antenna properties set.
  • the connection points for the supply indicated in the drawings and ground connection can and must also be interchanged not necessarily at the edge or a corner of the spotlight structure lie. They can be positioned so that for all operating frequency ranges a desired impedance behavior is set becomes.
  • the antenna can have its own ground plate or else the metallic parts and surfaces of the radio-operated communication terminal use as a ground plate.
  • the possibly additional Earth plate can be shaped as desired and does not necessarily have to be adapted to the shape of the radiator element his.
  • the individual parts of the radiator element can be different Heights, e.g. through cranking or inclines of the ground plane.
  • the antenna can also be adjusted by suitable vertical Structures to be compressed or by suitable Folding can be shortened.
  • the type of folds and / or upsets can be executed arbitrarily and can in different technologies can be realized. It can the radiator element alone, but also the associated ground plane be structured accordingly.
  • the corresponding shape the radiation properties of the individual radiator elements further change or improve or the antenna adapt to the geometry of the housing. In this case it is e.g. to name grading, slits, tapering, change of Spotlight height above the ground surface.
  • the multiband antenna according to the invention is that individual radiator parts, which are used for a planar inverted-F antenna, for example, can also be used for radiation as an inverted-L antenna or as a microstrip antenna. Any combination of radiator elements is possible, and consequently additional resulting antenna structures are possible. These enable radiation in further frequency ranges or can be used to further improve one or more radiation behavior.
  • the space or volume requirements can be kept small due to the multiple use of radiator parts.

Abstract

The antenna consists of a combination of one or several different antenna types. Each antenna type can be provided once or several times. The combination of the antennas is fed only at one point. Preferably, the combination includes at least two antenna types of the types planar inverted F-antenna, planar inverted L-antenna or microstrip antenna. The coupling between the antennas can be capacitive, inductive, radiative, or galvanic. The antenna can be integrated in the housing wall of the terminal housing.

Description

Die vorliegende Erfindung betrifft eine Antenne für funkbetriebene Kommunikationsendgeräte.The present invention relates to an antenna for radio-operated Communication terminals.

Insbesondere in Hinsicht auf die Entwicklung in der Mobilfunktechnologie werden Antennen benötigt, welche in der Lage sind, mehrere Frequenzbänder gleichzeitig abzudecken. Außerdem verlangt der Markt nach immer kleineren und billigeren Mobilfunkgeräten. Deswegen sind Antennen gefordert, die einen geringen Platzbedarf haben, problemlos für eine Funktion in mehreren Frequenzbändern oder einem breitbandigen Frequenzbereich auslegbar und billig herstellbar sind.Especially with regard to the development in mobile radio technology antennas are needed, which are able are to cover several frequency bands at the same time. Moreover the market is asking for smaller and cheaper ones Mobile devices. That is why antennas are required, some have a small footprint, easily for a function in several frequency bands or a broadband frequency range can be designed and manufactured cheaply.

Es sind Lösungen bekannt, bei denen einfach zwei oder mehrere einzelne planare Inverted-F-Antenne in einem Kommunikationsendgerät integriert werden. Dabei sind dann aber mehrere Speisepunkte notwendig, die dann über geeignete Beschaltungen anzusteuern sind, was einen zusätzlichen Aufwand darstellt.Solutions are known in which simply two or more single planar inverted-F antenna in a communication terminal to get integrated. But then there are several Feeding points necessary, which then have suitable circuits are to be controlled, which represents an additional effort.

Aufgabe der vorliegenden Erfindung ist es, eine Antenne für funkbetriebene Kommunikationsendgeräte anzugeben, welche einfach aufgebaut ist und gleichzeitig mehrere Frequenzbänder abdecken kann.The object of the present invention is to provide an antenna for radio-operated communication terminals to specify which simple is built up and simultaneously several frequency bands can cover.

Eine Antenne für funkbetriebene Kommunikationsendgeräte zur Lösung der erfindungsgemäßen Aufgabe ist gekennzeichnet durch eine aus mehreren unterschiedlichen Antennentypen bestehende Kombination, wobei jeder Antennentyp ein- oder mehrfach vorhanden sein kann und wobei die Kombination aus mehreren Antennen jeweils nur an einem Punkt eingespeist wird.An antenna for radio-operated communication terminals for Solution to the problem according to the invention is characterized by one consisting of several different antenna types Combination, where each antenna type exists one or more times can be and where the combination of several antennas is only fed in at one point.

Die erfindungsgemäße Antenne ist leicht und billig herstellbar, erfordert einen geringen Platzbedarf und ist problemlos für eine Funktion in mehreren Frequenzbändern oder in einem breitbandigen Frequenzbereich auslegbar.The antenna according to the invention is easy and inexpensive to manufacture, requires little space and is easy for a function in several frequency bands or in one broadband frequency range can be designed.

Weitere zweckmäßige Ausgestaltungen der erfindungsgemäßen Antenne ergeben sich aus den Unteransprüchen sowie aus einer nachfolgenden Beschreibung von Ausführungsbeispielen anhand der Zeichnungen.Further expedient configurations of the antenna according to the invention result from the subclaims and from a The following description of exemplary embodiments based on of the drawings.

In den Zeichnungen zeigen

  • Figur 1 eine perspektivische Prinzipdarstellung einer möglichen Ausführungsform einer Antenne gemäß der vorliegenden Erfindung, bestehend aus einer planaren Inverted-F-Antenne und einer Patch-Antenne,
  • Figur 2 eine perspektivische Prinzipdarstellung einer anderen möglichen Ausführungsform einer Antenne gemäß der vorliegenden Erfindung, bestehend aus einer planaren Inverted-F-Antenne und einer planaren Inverted-L-Antenne,
  • Figur 3 eine perspektivische Prinzipdarstellung einer weiteren Ausführungsform einer Antenne gemäß der vorliegenden Erfindung, bestehend aus einer Patch-Antenne und einer planaren Inverted-L-Antenne,
  • Figur 4 eine perspektivische Prinzipdarstellung einer weiteren möglichen Ausführungsform einer Antenne gemäß der vorliegenden Erfindung mit einer definierten separaten Masseplatte,
  • Figur 5a bis 5m Beispiele für unterschiedliche Ausgestaltungen der Strahlerelemente von weiteren Ausführungen einer Antenne gemäß der vorliegenden Erfindung,
  • Figur 6 eine prinzipielle Schnittdarstellung einer verkürzten Antenne gemäß der vorliegenden Erfindung,
  • Figur 7 eine prinzipielle Schnittdarstellung einer anderen verkürzten Antenne gemäß der vorliegenden Erfindung,
  • Figur 8 eine prinzipielle Schnittdarstellung einer weiteren verkürzten Antenne gemäß der vorliegenden Erfindung,
  • Figur 9 bis Figur 11 prinzipielle Anordnungen von erfindungsgemäßen Antennen zur Verbesserung der Abstrahleigenschaften, und
  • Figur 12 eine perspektivische Prinzipdarstellung einer weiteren möglichen Ausführungsform einer Antenne gemäß der vorliegenden Erfindung.
    • Show in the drawings
  • FIG. 1 shows a perspective illustration of a possible embodiment of an antenna according to the present invention, consisting of a planar inverted-F antenna and a patch antenna,
  • FIG. 2 shows a perspective basic illustration of another possible embodiment of an antenna according to the present invention, consisting of a planar inverted-F antenna and a planar inverted-L antenna,
  • FIG. 3 shows a perspective basic illustration of a further embodiment of an antenna according to the present invention, consisting of a patch antenna and a planar inverted-L antenna,
  • FIG. 4 shows a perspective basic illustration of a further possible embodiment of an antenna according to the present invention with a defined separate ground plate,
  • 5a to 5m examples of different configurations of the radiator elements of further embodiments of an antenna according to the present invention,
  • FIG. 6 shows a basic sectional illustration of a shortened antenna according to the present invention,
  • FIG. 7 shows a basic sectional illustration of another shortened antenna according to the present invention,
  • FIG. 8 shows a basic sectional illustration of a further shortened antenna according to the present invention,
  • 9 to 11 basic arrangements of antennas according to the invention to improve the radiation properties, and
  • FIG. 12 shows a perspective basic illustration of a further possible embodiment of an antenna according to the present invention.

    • In Figur 1 sind mit 1 und 2 die beiden eigentlichen Antennen, aus denen die erfindungsgemäße Multiband-Antenne zusammengesetzt ist, bezeichnet, wobei es sich in dem in Figur 1 dargestellten Beispiel um eine planare Inverted-F-Antenne 1 und um eine Patch-Antenne oder Mikrostrip-Antenne 2 handelt. Von dem Mobilfunkgerät 3 ist lediglich ein Teil der Gehäusewand gezeigt, welche mit einer metallischen EMV-Schirmung 4 überzogen ist. Bei der dargestellten Multiband-Antenne bildet diese metallische EMV- Schirmung die für die beiden Antennen 1 und 2 notwendige Masse.1 and 2 are the two actual antennas in FIG. from which the multiband antenna according to the invention is composed is referred to, it being in that shown in Figure 1 Example of a planar inverted-F antenna 1 and is a patch antenna or microstrip antenna 2. Of the Mobile radio device 3 only shows part of the housing wall, which are covered with a metallic EMC shield 4 is. In the multiband antenna shown, this forms metallic EMC shielding for the two antennas 1 and 2 necessary dimensions.

    Die Verbindung zwischen dem Strahlerelement der Antenne 1 und der metallischen EMV- Schirmung 4 wird über die Masseverbindung 5 hergestellt. Der eigentliche Speisepunkt der Antenne ist mit 6 gekennzeichnet. Mit 7 ist eine symbolische Verkopplung der beiden Antennen 1 und 2 angedeutet. Diese Verkopplung kann kapazitiv, induktiv, gestrahlt oder galvanisch sein. Durch die Art der Kopplung können verschiedene Parameter der Antenne eingestellt werden.The connection between the radiator element of the antenna 1 and the metallic EMC shield 4 is connected via the ground connection 5 manufactured. The actual feeding point of the antenna is marked with 6. With 7 is a symbolic coupling of the two antennas 1 and 2 indicated. This coupling can be capacitive, inductive, blasted or galvanic his. Due to the type of coupling, different parameters the antenna.

    Bezüglich der in Figur 1 dargestellten Antennenkonfiguration ist festzustellen, daß die Masseverbindung 5 auch punktuell, sowie mehrfach punktuell möglich ist. With regard to the antenna configuration shown in Figure 1 it should be noted that the ground connection 5 is also selective, as well as several times is possible.

    Figur 2 zeigt nun eine perspektivische Prinzipdarstellung einer Multiband-Antenne gemäß der vorliegenden Erfindung, welche aus einer planaren Inverted-F-Antenne 8 und einer planaren Inverted-L-Antenne 9 besteht. Im vorliegenden Falle sind die beiden Antennen 8 und 9 über eine galvanische Verkopplung 10 miteinander verkoppelt. Die Speisung der Multiband-Antenne erfolgt mittels eines Speisepunktes 11, der mit der planaren Inverted-L-Antenne 9 verbunden ist. Die Masseverbindung der dargestellten Antennenkonfiguration erfolgt über die Masseverbindung 12.Figure 2 now shows a perspective representation of a principle Multiband antenna according to the present invention, which from a planar inverted-F antenna 8 and a planar Inverted L antenna 9 is made. In the present case the two antennas 8 and 9 via a galvanic coupling 10 coupled together. Feeding the multiband antenna takes place by means of a feed point 11, which with the planar Inverted L antenna 9 is connected. The ground connection of the Antenna configuration shown takes place via the ground connection 12th

    Figur 3 stellt eine Antennenkonfiguration dar, welche aus einer Mikrostrip-Antenne 13 und eine mit dieser galvanisch verbundenen planaren Inverted-L-Antenne 14 besteht. Die Antennenkonfiguration wird über den Speisepunkt 15 gespeist.FIG. 3 shows an antenna configuration which consists of a Microstrip antenna 13 and one galvanically connected to it planar inverted L antenna 14 exists. The antenna configuration is fed via the feed point 15.

    Figur 4 zeigt ein Ausführungsbeispiel einer erfindungsgemäßen Multibandantenne, bei welcher im Gegensatz zu der in Figur 1 dargestellten Multibandantenne eine zusätzliche separate Masseplatte 16 vorgesehen ist. Da unter normalen Umständen die Masseverhältnisse innerhalb eines funkbetriebenen Kommunikationsendgerätes nicht immer voll abschätzbar sind, sorgt die Masseplatte 16 für definierte Masseverhältnisse in Bezug auf die Multibandantenne. Zwischen der Masseplatte und der Gerätemasse können eine oder mehrere Verbindungen vorgesehen sein.Figure 4 shows an embodiment of an inventive Multi-band antenna, in which, in contrast to that in FIG. 1 Multiband antenna shown an additional separate ground plate 16 is provided. Because under normal circumstances Mass ratios within a radio-operated communication terminal are not always fully predictable Mass plate 16 for defined mass ratios with respect to the multi-band antenna. Between the ground plate and the device ground one or more connections can be provided his.

    Die Figuren 5a bis 5m zeigen eine kleine beispielhafte Auswahl von unterschiedlich gestalteten und miteinander verkoppelten Antennentypen gemäß der vorliegenden Erfindung. Diese Auswahl ist keinesfalls beschränkend. Auch hier gilt, daß die Kombination der miteinander verkoppelten Antennentypen beliebig sein kann.Figures 5a to 5m show a small sample selection of differently designed and linked together Types of antennas according to the present invention. This Selection is by no means restrictive. The same applies here that the Any combination of the coupled antenna types can be.

    Zur Verkürzung der Einbaulänge der erfindungsgemäßen Antenne kann das Strahlerelement wellenförmig, wie in Figur 6 gezeigt ist, ausgebildet sein, oder, wie in Figur 8 gezeigt ist, rechteckförmig meanderförmig.To shorten the installation length of the antenna according to the invention the radiating element can be wavy, as shown in FIG is formed, or, as shown in FIG. 8, rectangular meandering.

    In Figur 7 ist beispielshaft dargestellt, daß sich selbstverständlich auch die Masseplatte der Form des Strahlerelements anpassen kann.FIG. 7 shows, by way of example, that it goes without saying also the ground plate of the shape of the radiator element can adjust.

    Zur Verbesserung der Abstrahleigenschaften und der Bandbreitenerhöhung kann vorgesehen sein, daß die Ebene des Strahlerelements der Multibandantenne nicht hundertprozentig parallel zur metallischen EMV-Schirmung des funkbetriebenen Kommunikationsendgerätes verläuft, sondern sich an einer oder mehrerer Stellen ein größerer Abstand zwischen der Antenne und der metallischen EMV-Schicht bildet. Dies ist beispielhaft in Figur 9 dargestellt. Die Abstandserhöhung kann beispielsweise auch am Speisepunkt der Antenne auftreten.To improve the radiation properties and increase the bandwidth can be provided that the plane of the radiator element the multi-band antenna is not 100 percent parallel for metallic EMC shielding of the radio-operated communication terminal runs, but at one or several places a larger distance between the antenna and the metallic EMC layer. This is an example shown in Figure 9. The increase in distance can, for example also occur at the feed point of the antenna.

    Die gleiche Problematik ist in Figur 10 dargestellt, wobei davon ausgegangen wird, daß sich normalerweise die Ebene des Strahlerelements der Multibandantenne dem Gehäuseverlauf anpaßt - in Figur 10 gestrichelt dargestellt -, aber um die Abstrahleigenschaften zu verbessern, geradlinig weitergeführt werden kann.The same problem is shown in Figure 10, wherein it is assumed that the level of the Radiator element of the multi-band antenna adapts to the course of the housing - shown in dashed lines in Figure 10 -, but about the radiation properties to improve, continued in a straight line can be.

    Eine weitere Möglichkeit zu Verbesserung der Abstrahleigenschaften der Antenne ist prinzipiell in Figur 11 dargestellt.Another way to improve the radiation properties the antenna is shown in principle in Figure 11.

    In Figur 12 ist eine perspektivische Prinzipdarstellung einer teilweise verkürzten Antennenkonfiguration gemäß der vorliegenden Erfindung dargestellt. Die dargestellte Antennenkonfiguration besteht aus einer gestauchten Mikrostrip-Antenne 17 und einer planaren Inverted-F-Antenne 18, welche miteinander galvanisch verbunden sind, wobei die Speisung und die Verbindung mit Masse über die planare Inverted-F-Antenne erfolgt. Gleichzeitig weisen Teile der eigentlichen Strahlerelemente der beiden Antennen unterschiedliche Höhen, bzw. Steigungen auf.FIG. 12 is a perspective representation of a principle partially shortened antenna configuration according to the present Invention shown. The antenna configuration shown consists of a compressed microstrip antenna 17 and a planar inverted-F antenna 18 which are connected to each other are electrically connected, the supply and the connection with ground via the planar inverted-F antenna. At the same time, parts of the actual radiator elements point the two antennas have different heights or slopes on.

    Zusammenhängend ist festzustellen, daß die erfindungsgemäße Antenne das der Erfindung zugrundeliegende Problem dadurch löst, daß keine, eine oder mehrere planare Inverted-F-Antennen und/oder keine, eine oder mehrere planare Inverted-L-Antennen und/oder keine, eine oder mehrere Mikrostrip-(Patch)-Antennen durch Kopplung zu einem Antennensystem miteinander verbunden werden. In den vorstehend dargestellten Ausführungsbeispielen sind lediglich aus zwei unterschiedlichen Antennen bestehende Antennensysteme dargestellt. Jedoch ist die vorliegende Erfindung nicht darauf beschränkt.In context, it should be noted that the invention Antenna the problem underlying the invention resolves that none, one or more planar inverted-F antennas and / or none, one or more planar inverted-L antennas and / or none, one or more microstrip (patch) antennas by coupling to one another to form an antenna system get connected. In the above Embodiments are only two different Antennas existing antenna systems shown. However the present invention is not limited to this.

    Gespeist wird die Antennenstruktur nur an einem Punkt. Dieser besitzt vorzugsweise eine planare Inverted-F-Struktur oder eine planare Inverted-L-Struktur. Es sind aber auch Lösungen denkbar, bei denen die Einspeisung über eine Mikrostrip-Struktur erfolgt. Die Kopplung zwischen den einzelnen Strahlerelementen kann dabei kapazitiv, induktiv, gestrahlt oder galvanisch sein. Durch die Art und Anzahl der Kopplungen können verschiedene Parameter der Antenne eingestellt werden. Sind beispielsweise die Abmessungen für die planare Inverted-F-Antenne und die Mikrostrip-Antenne etwa von der Länge her gleich, verhalten sich die Strahlungsfrequenzen wie ca. 1:2. Dieses kann beim Einsatz als GSM-PCN-Antenne genutzt werden.The antenna structure is only fed at one point. This preferably has a planar inverted-F structure or a planar inverted L structure. But they are also solutions conceivable, in which the feed via a microstrip structure he follows. The coupling between the individual radiator elements can be capacitive, inductive, blasted or be galvanic. Due to the type and number of couplings various parameters of the antenna can be set. For example, are the dimensions for the planar inverted-F antenna and the length of the microstrip antenna the same, the radiation frequencies behave like approx. 1: 2. This can be used as a GSM-PCN antenna.

    Durch geeignete Gestaltung der Strahlerelemente-Kombination kann ein Teil davon für zwei oder mehrere Frequenzbereiche benutzt werden, und dadurch können die Gesamtabmessungen des Antennensystems kleingehalten werden. Durch Querresonanzen zwischen den verschiedenen Strahlerteilen kann es zu zusätzlichen Abstrahlungen bei weiteren Frequenzen kommen.By suitable design of the combination of radiator elements can be a part of it for two or more frequency ranges can be used, and thereby the overall dimensions of the Antenna systems are kept small. Through cross-resonance there may be additional ones between the different parts of the heater Radiations come at other frequencies.

    Diese planare Antennenstruktur benötigt eine Speise- und eine oder mehrere Masseanbindungen, die beliebig ausgeformt sein können, tun bestimmte Antenneneigenschaften einzustellen. Die in den Zeichnungen angegebenen Anschlußpunkte für die Speisung und Masseanbindung können auch vertauscht sein und müssen nicht zwingend am Rand oder eine Ecke der Strahlerstruktur liegen. Sie sind so positionierbar, daß für alle Betriebsfrequenzbereiche ein gewünschtes Impedanzverhalten eingestellt wird.This planar antenna structure requires one feed and one or several ground connections, which can be of any shape can do certain antenna properties set. The connection points for the supply indicated in the drawings and ground connection can and must also be interchanged not necessarily at the edge or a corner of the spotlight structure lie. They can be positioned so that for all operating frequency ranges a desired impedance behavior is set becomes.

    Die Antenne kann ihre eigene Masseplatte besitzen oder auch die metallischen Teile und Flächen des funkbetriebenen Kommunikationsendgeräts als Masseplatte benutzen. Die evtl. zusätzliche Masseplatte kann dabei beliebig ausgeformt sein und muß nicht zwingend an die Form des Strahlerelementes angepaßt sein.The antenna can have its own ground plate or else the metallic parts and surfaces of the radio-operated communication terminal use as a ground plate. The possibly additional Earth plate can be shaped as desired and does not necessarily have to be adapted to the shape of the radiator element his.

    Die einzelnen Teile des Strahlerelements können unterschiedliche Höhen, z.B. durch Kröpfung oder Steigungen, gegenüber der Massefläche aufweisen. Zur Verringerung der Abmessungen in Längsrichtung kann die Antenne auch durch geeignete vertikale Strukturierung gestaucht werden oder durch geeignete Faltung verkürzt werden. Die Art der Faltungen und/oder Stauchungen können dabei beliebig ausgeführt werden und können in unterschiedlichen Technologien realisiert werden. Dabei kann das Strahlerelement allein, aber auch die zugehörige Massefläche entsprechend strukturiert sein. Die entsprechende Ausformung der einzelnen Strahlerelemente können die Abstrahleigenschaften weiter verändern bzw. verbessern oder die Antenne an die Geometrie des Gehäuses anpassen. In diesem Falle ist z.B. zu nennen Stufung, Schlitze, Taperung, Veränderung der Strahlerhöhe über der Massefläche.The individual parts of the radiator element can be different Heights, e.g. through cranking or inclines of the ground plane. To reduce the dimensions in the longitudinal direction, the antenna can also be adjusted by suitable vertical Structures to be compressed or by suitable Folding can be shortened. The type of folds and / or upsets can be executed arbitrarily and can in different technologies can be realized. It can the radiator element alone, but also the associated ground plane be structured accordingly. The corresponding shape the radiation properties of the individual radiator elements further change or improve or the antenna adapt to the geometry of the housing. In this case it is e.g. to name grading, slits, tapering, change of Spotlight height above the ground surface.

    Aus mechanischen Gründen bzw. zur Verbesserung der Abstrahleigenschaften oder optimalen Ausnutzung eines verfügbaren Volumens ist es ebenfalls möglich, geeignete dielektrische oder magnetische Materialien in die Antennenstruktur einzubringen. Diese können die Antennenstruktur teilweise aber auch vollständig ausfüllen. Es sich auch Kombinationen von verschiedenen dielektrischen und/oder magnetischen Stoffen bzw. Luft möglich.
    Der Vorteil der erfindungsgemäßen Multiband-Antenne liegt darin, daß einzelne Strahlerteile, die für z.B. ein planare Inverted-F-Antenne genutzt werden, auch zur Abstrahlung als eine Inverted-L-Antenne oder als eine Mikrostrip-Antenne genutzt werden können. Dabei sind beliebige Kombinationen von Strahlerelementen möglich und folglich zusätzliche sich ergebende Antennenstrukturen möglich. Diese ermöglichen eine Abstrahlung in weiteren Frequenzbereichen oder können zur weiteren Verbesserung eines oder mehrerer Abstrahlungsverhalten genutzt werden. Durch die mehrfach mögliche Nutzung von Strahlerteilen kann der Flächenbedarf bzw. Volumenbedarf kleingehalten werden. Da man am einzigen Fußpunkt, d.h. dem Speisepunkt, der Antenne eine Impedanz von beispielsweise 50 Ohm für alle Frequenzbereiche einstellen kann, ist keine weitere Beschaltung mehr nötig. Die Verluste in einem sonst evtl. nötigen Speisenetzwerk entfallen somit. Da bei den erfindungsgemäßen Antennen je nach Frequenzbereich unterschiedliche Teile zur Strahlung beitragen, werden bei einer versehentlich teilweisen Abdeckung der Antenne mit der Hand nicht alle Frequenzbereiche gleichermaßen gestört. Eine bestehende Gesprächsverbindung kann folglich ggf. in einem ungestörten Frequenzbereich aufrechterhalten werden.    For mechanical reasons or to improve the radiation properties or optimal use of an available volume, it is also possible to introduce suitable dielectric or magnetic materials into the antenna structure. However, some of these can also completely fill the antenna structure. Combinations of different dielectric and / or magnetic substances or air are also possible.
    The advantage of the multiband antenna according to the invention is that individual radiator parts, which are used for a planar inverted-F antenna, for example, can also be used for radiation as an inverted-L antenna or as a microstrip antenna. Any combination of radiator elements is possible, and consequently additional resulting antenna structures are possible. These enable radiation in further frequency ranges or can be used to further improve one or more radiation behavior. The space or volume requirements can be kept small due to the multiple use of radiator parts. Since you can set an impedance of, for example, 50 ohms for all frequency ranges at the only base point, ie the feed point, of the antenna, no further wiring is necessary. The losses in an otherwise necessary dining network are thus eliminated. Since different parts of the antennas according to the invention contribute to the radiation depending on the frequency range, not all frequency ranges are equally disturbed if the antenna is accidentally partially covered by hand. An existing call connection can consequently be maintained in an undisturbed frequency range.

    Claims (17)

    Antenne für funkbetriebene Kommunikationsendgeräte, gekennzeichnet durch eine aus mehreren unterschiedlichen Antennentypen bestehende Kombination, wobei jeder Antennentyp ein- oder mehrfach vorhanden sein kann und wobei die Kombination aus mehreren Antennen jeweils nur an einem Punkt eingespeist wird.Antenna for radio-operated communication terminals, characterized by one of several different antenna types existing combination, each antenna type can be present one or more times and the combination fed from several antennas only at one point becomes. Antenne nach Anspruch 1, dadurch gekennzeichnet, daß die Kombination mindestens zwei Antennentypen aufweist.Antenna according to claim 1, characterized in that the Combination has at least two antenna types. Antenne nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß als Antennentyp planare Inverted-F-Antennen, planare Inverted-L-Antennen oder Mikrostrip-(Patch-)Antennen eingesetzt werden.Antenna according to claim 1 or 2, characterized in that as antenna type planar inverted-F antennas, planar inverted-L antennas or microstrip (patch) antennas become. Antenne nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Kopplung zwischen den verschiedenen Antennentypen kapazitiv, induktiv, gestrahlt oder galvanisch erfolgt.Antenna according to one of the preceding claims, characterized characterized in that the coupling between the different Capacitive, inductive, radiated or galvanic antenna types he follows. Antenne nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Antenne in der Gehäusewand des Endgerätegehäuse integriert ist.Antenna according to one of the preceding claims, characterized characterized in that the antenna in the housing wall of the terminal housing is integrated. Antenne nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß die einzelnen Antennenstrukturteile in ihrer Längsrichtung bzw. ihrer Querrichtung durch geeignete vertikale Strukturierung in horizontaler Richtung gestaucht sind.Antenna according to claim 1 to 3, characterized in that the individual antenna structure parts in their longitudinal direction or their transverse direction by suitable vertical structuring are compressed in the horizontal direction. Antenne nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Position und die Art von ein oder mehrerer Masseverbindungen zwischen Strahlerelement und Massefläche an die gewünschten Antenneneigenschaften angepaßt werden.Antenna according to one of claims 1 to 6, characterized in that that the position and type of one or more Earth connections between the radiator element and earth surface can be adapted to the desired antenna properties. Antenne nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Position und die Art der Speiseverbindung zu einem Strahlerelement an die gewünschten Antenneneigenschaften angepaßt werden.Antenna according to one of claims 1 to 6, characterized in that that the position and type of feed connection to a radiator element to the desired antenna properties be adjusted. Antenne nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Position und die Art von ein oder mehreren Masseverbindungen zwischen einer definierten separaten Massefläche und der Massefläche des Gerätes an die gewünschten Antenneneigenschaften angepaßt werden.Antenna according to one of claims 1 to 6, characterized in that that the position and type of one or more Earth connections between a defined separate Ground surface and the ground surface of the device to the desired Antenna properties can be adjusted. Antenne nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Positionen der Speiseverbindung sowie einer Masseverbindungen zur wirksamen Antennenmasse vertauscht sind.Antenna according to one of claims 1 to 6, characterized in that that the positions of the feed connection as well a ground connections swapped to the effective antenna ground are. Antenne nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Speiseverbindung sowie der Masseverbindungen an beliebigen Positionen auf dem Strahlerelement kontaktieren.Antenna according to one of claims 1 to 6, characterized in that that the feed connection as well as the ground connections contact at any position on the emitter element. Antenne nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Speiseverbindung sowie die Masseverbindungen beliebig ausgeformt sind.Antenna according to one of claims 1 to 6, characterized in that that the feed connection as well as the ground connections are shaped arbitrarily. Antenne nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß einzelne Teile von besagten Strahlerelementen derart ausgeformt sind, daß sie in beliebige Richtung weisen.Antenna according to one of claims 1 to 6, characterized in that that individual parts of said radiator elements are shaped so that they are in any direction point. Antenne nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Strahlerstruktur in mehrere Teilelemente aufgeteilt ist, die durch geeignete Verkopplung wieder die gewünschte Antennenfunktion erfüllt. Antenna according to one of claims 1 to 6, characterized in that that the radiator structure in several sub-elements is divided again by suitable coupling fulfills the desired antenna function. Antenne nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß einzelne Teile der genannten Strahlerelemente der Antenne in der Horizontalebene beliebig gekrümmt oder gefaltet sind.Antenna according to claim 1 or 2, characterized in that individual parts of the antenna elements mentioned are arbitrarily curved or folded in the horizontal plane. Antenne nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß durch vollständige oder teilweise Einbringung von einem oder mehreren dielektrischen bzw. magnetischen Materialien oder einer Mischung von beiden, ein gewünschtes Antennenverhalten erreicht wird.Antenna according to one of claims 1 to 6, characterized in that that by full or partial contribution of one or more dielectric or magnetic Materials or a mixture of both, a desired one Antenna behavior is achieved. Antenne nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß Teilbereiche der Antennenstruktur für einen Antennenfunktion in verschiedenen Frequenzbereichen genutzt werden.Antenna according to one of claims 1 to 6, characterized in that that sections of the antenna structure for one Antenna function used in different frequency ranges become.
    EP00100221A 1999-01-26 2000-01-14 Antenna for radio communication terminals Withdrawn EP1024552A3 (en)

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